1
Wendell J Manske: Selected time interval indicating device. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & DeLaHunt, May 4, 1976: US03954011 (67 worldwide citation)

Indicating device suitable for visibly measuring parameters such as time, temperature, and time-temperature relationships. The device includes a porous fluid carrying pad, a wick material for said fluid, and an indicator means whereby the progress of fluid along the wick material can be visibly indi ...


2
Samuel Yue, Wendell J Manske, John D Dockter: Fluid warmer. PMT Corporation, Hugh D Jaeger, August 27, 1991: US05042455 (65 worldwide citation)

A warmer used to warm fluids, such as blood or the like, passed into the human body. Air is introduced through an opened windowed membrane to expose chemicals in a container. A chemical reaction with the air causes a heat reaction of the chemicals. A tube engages in a trough in the container adjacen ...


3
Wendell J Manske: Critical temperature indicator. Minnesota Mining and Manufacturing Company, Donald M Sell, James A Smith, David W Anderson, July 3, 1984: US04457252 (28 worldwide citation)

A critical temperature indicator is provided utilizing the volume reduction characteristics of organic compounds as they undergo a change from the liquid state to the solid state. The bulb and a portion of the capillary tube of a thermometer-like structure contains a colorless organic compound. Anot ...


4
Wendell J Manske: Reservoir pad for time indicator. Minnesota Mining and Manufacturing Company, Alexander Sell Steldt & DeLaHunt, June 15, 1976: US03962920 (28 worldwide citation)

Indicating device suitable for visibly measuring parameters such as time, temperature, and time-temperature relationships. The device comprises in combination a porous reservoir pad containing an indicating material, a wick material and activating means. The progress of the indicating material along ...


5
Wendell J Manske: Critical temperature indicator. Minnesota Mining and Manufacturing Company, Donald M Sell, James A Smith, David W Anderson, July 3, 1984: US04457253 (25 worldwide citation)

A critical temperature indicator is provided utilizing the volume reduction characteristics of organic compounds as they undergo a change from the liquid state to the solid state. A capillary tube sealed at one end contains a first organic compound adjacent the closed end and a second colored organi ...


6
Wendell J Manske: Dual temperature indicator. Introtech, Anthony G Eggink, June 1, 1993: US05215378 (24 worldwide citation)

A dual temperature indicator providing visual indications when exposed to predetermined high or low temperatures. The indicator has a bulb with a capillary tube and an attached high temperature indicator structure. The bulb has a first liquid which also fills a predetermined portion of the tube. A s ...


7
Wendell J Manske, Paul M Hawkins: Sanitation indicator. Minnesota Mining and Manufacturing Company, Cruzan Alexander, Donald M Sell, Warren R Bovee, October 12, 1982: US04353990 (22 worldwide citation)

A device for monitoring thermal energy input and displaying the relationship of the thermal energy input to a selected time/temperature relationship. The device employs an indicating material which, when melted, expands and flows into a narrow channel to provide an irreversible, visible indication o ...


8
Wendell J Manske: Device for visually indicating a pressure or temperature condition. Minnesota Mining and Manufacturing Company, Donald M Sell, December 27, 1988: US04793717 (17 worldwide citation)

Indicating device suitable for visibly indicating conditions such as the application of force or pressure or the exposure to a critical temperature. The device includes a porous pad containing an indicating dyed chemical, a wick maintained in spaced relation to the pad and a snap action activating m ...


9
Wendell J Manske: Humidity indicating method and device. Minnesota Mining and Manufacturing Company, Cruzan Alexander, Donald M Sell, Warren R Bovee, July 4, 1978: US04098120 (12 worldwide citation)

Humidity indicating method and device suitable for visibly indicating exposure to a selected humidity level or for indicating a humidity-time history. The device comprises in combination a deliquescent compound, a liquid absorbent wick, and an indicating means. The change in properties of deliquesce ...


10
Wendell J Manske, Paul M Hawkins: Freeze indicating device. Minnesota Mining and Manufacturing Company, Cruzan Alexander, Donald M Sell, James A Smith, January 2, 1979: US04132186 (9 worldwide citation)

A freeze indicating device which provides a visible record when it has been exposed to a specified low temperature such as 0.degree. C. The indicator utilizing a two-chamber, constant volume device, one chamber having a variable volume and another chamber being expandable upon freezing of an aqueous ...